OEM replacement motor run capacitor for Coleman Mach 6537, 8333, 8335, 9014-676, 9024-676, and 9034-679 Series rooftop air conditioners. Cylindrical form factor, 45 microfarads, 370V AC, 50/60 Hz — provides stable current to the fan motor and protects against voltage fluctuation during AC operation.
The 1499-5731 is the OEM replacement motor run capacitor for Coleman Mach 6537, 8333, 8335, and select 9000 Series rooftop RV air conditioners. Run capacitors are a serviceable wear component — they store and release electrical energy to maintain steady current flow to the fan motor during AC operation, stabilize motor speed, and reduce the electrical stress that causes premature motor wear.
This capacitor is rated at 45 microfarads (MFD) and 370V AC, and is compatible with both 50 Hz and 60 Hz systems. It has a cylindrical form factor measuring 1-15/16" in diameter, 4-1/8" body height, and 4-5/8" total height including terminals. The slightly shorter body height differentiates it from the 60 MFD 1499-5761 — both share the same diameter and terminal-to-terminal height.
Common failure symptoms include the unit struggling or refusing to start, a humming sound with no cooling output, the system overheating and tripping off shortly after startup, or a visible bulge or fluid leak on the capacitor body. When replacing a run capacitor, the replacement MFD rating must match the original exactly — an incorrect microfarad value can cause the motor to run at the wrong speed, draw excess current, overheat, or fail prematurely.
45-microfarad run capacitor rated at 370 volts AC — must match the MFD of the original capacitor being replaced
1-15/16" diameter × 4-1/8" body / 4-5/8" total height — direct drop-in for all compatible models listed below
Rated for both 50 Hz and 60 Hz AC power systems
Backed by a 90-day limited manufacturer's warranty
The microfarad (MFD or µF) rating on the replacement capacitor must match the original capacitor exactly. Installing a different MFD value — even a close one — can cause the motor to run at the wrong speed, draw excess current, overheat, or fail prematurely. The 1499-5731 is rated at 45 MFD. Verify this matches the original before installing.
Disconnect all power to the unit before inspecting or replacing the capacitor.
Disconnect and lock out all electrical power to the air conditioner before beginning replacement. Run capacitors can retain a charge even after power is removed — discharge the capacitor through an appropriate resistor before handling. Note wire connections before removing the old capacitor and reconnect to the new unit in the same configuration. Restore all assemblies before reapplying power and run-testing the system.